Example #2: "Jinzo" will negate the effects of "Imperial Order", but will not negate the "maintenance" cost of 700 Life Points during your Standby Phase. If you do not pay the 700 Life Points, then "Imperial Order" is destroyed (you always have the choice whether to pay or not to pay).

Example #3: "Skill Drain" will negate the effects of "Armor Exe" (so with "Skill Drain" active, "Armor Exe" can attack the same turn it is Summoned), but will not negate the "maintenance" cost of removing 1 Spell Counter during each Standby Phase. If you do not remove 1 Spell Counter, then "Armor Exe" is destroyed (you always have the choice whether to pay or not to pay).

Example #4: "Skill Drain" will negate the effects of "Terrorking Archfiend" (so "Terrorking Archfiend" will not negate the effects of monsters it destroys in battle, and will not get to roll its die when targeted by an opponent's card effect), but will not negate the "maintenance" cost of paying 800 Life Points during your Standby Phase. If you cannot pay the 800 Life Points, then "Terrorking Archfiend" is destroyed (you must pay if possible, because "Terrorking Archfiend" says "this is not optional").

The third kind of cost is non-"maintenance" costs for cards that remain on the field. Examples include paying Life Points to attack with "Dark Elf", "Jirai Gumo", or Toon Monsters. These are not "maintenance" costs because they are not costs that are paid to keep the card on the field. These costs are negated when the card's effect is negated. So if "Skill Drain" is active then you do not pay the cost for attacking with such monsters.